The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 1986
Filed:
Oct. 31, 1984
Applicant:
Inventors:
Peter Schilling, Charleston, SC (US);
David V Braddon, Charleston, SC (US);
Assignee:
Westvaco Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C23F / ; E21B / ;
U.S. Cl.
CPC ...
252-8553 ; 252148 ; 252391 ; 252392 ; 422 12 ;
Abstract
An anti-corrosive composition is disclosed which comprises the condensate of a polyamine such as diethylenetriamine, triethylenetetramine or aminoethylethanol amine with a 21 or 22 carbon fatty polycarboxylic acid or acid anhydride. The composition may additionally include the condensation products of the above polyamines with either tall oil fatty acids or Rosin S. Propargyl alcohol has been found to enhance the anti-corrosive effects of the composition. The compositions are especially useful in well drilling operations where a strong inorganic acid is used to facilitate crude oil flow.